How do you say this is my mum her name in french?

There are a few ways to say "This is my mum, her name is..." in French, depending on the context and level of formality:

Formal:

* Voici ma mère, elle s'appelle... (This is my mother, her name is...)

* Je vous présente ma mère, elle s'appelle... (I present you to my mother, her name is...)

Informal:

* C'est ma mère, elle s'appelle... (This is my mum, her name is...)

* Voilà ma mère, elle s'appelle... (Here's my mum, her name is...)

You can also use "maman" instead of "mère" for a more casual tone.

Example:

* "C'est ma maman, elle s'appelle Marie." (This is my mum, her name is Marie.)